Operation Yoav (also called Operation Ten Plagues or Operation Yo'av) was an Israeli military operation carried out from 15–22 October 1948 in the Negev Desert, during the 1948 Arab–Israeli War. Its goal was to drive a wedge between the Egyptian forces along the coast and the Beersheba–Hebron–Jerusalem road, and ultimately to conquer the whole Negev. Operation Yoav was headed by the Southern Front commander Yigal Allon. The operation was named after Yitzhak Dubno, codenamed "Yoav" by his commanders in the Palmach. Dubno, a senior Palmach officer, was charged with planning and leading the defense of the kibbutzim Negba and Yad Mordechai. Dubno was killed in an air raid on Kibbutz Negba shortly after Egyptian forces began their offensive on Israel's southern front.